Perhaps your Marathon Plus tyres are worn? My Marathon Plus hold the road well in even heavy rain, and even when going fast around bends slightly sideways. See video below. Marathon Plus are useless offroad, slip away unexpectdley sideways on even the smallest patch of mud. They also slip out suddenly sideways on wet metal manhole covers. I narrowly missed one while slightly sideways going around this bend.I run Schwalbe Marathon Plus but don't find them that good is the wet